Paul Walker 's mum has revealed what happened the last time she saw the Fast and the Furious star before his tragic death.

The actor was killed in November 2013, at the age of 40, when a car he was a passenger in crashed and burst into flames.

His mum, Cheryl, has told of the last conversation she had with her son, and his daughter, Meadow, and how she had no idea it would be the last time she'd see him.

Speaking ahead of new documentary I Am Paul Walker, which will feature interviews with the late star's friends and family, Cheryl said she had been chatting to her son and granddaughter about buying a Christmas tree before he realised he was supposed to be at an event and rushed off.

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She told People magazine: "We were having this good conversation, and he'd forgotten about an event he had... He got a text and said, 'Oh my gosh, I'm supposed to be somewhere!'"

Sadly, that would be the last conversation she'd have with her beloved son.

It's said that he was burned so badly in the accident that he was left unrecognisable.

Cheryl went on: "I think so many people think, 'Oh, he was just a movie star who was killed in a car accident.'

"But there was so much more to him. That was just a piece of who he was. He was an amazing man."

Paul's family have maintained a tradition to keep his memory alive.

A new documentary will look at his life (Image: Youtube)

It features home movies from his childhood (Image: Youtube)

Each year on his birthday - September 12 - Paul's loved ones visit one of his favourite surfing spots and throw sunflowers into the ocean.

Cheryl added: "I've gotten letters from people all over the world who said he made a difference in their lives.

"That is such a blessing. He's never forgotten."

A trailer for I Am Paul Walker was released recently - and it looks like it's going to be very emotional.

The documentary celebrates the life of the late Fast And Furious star through heartwarming stories from his siblings about their life growing up together and inspiring tales about his kindness in adulthood.